.\" $OpenBSD: OPENSSL_init_ssl.3,v 1.4 2019/06/14 13:41:31 schwarze Exp $
.\" Copyright (c) 2018 Ingo Schwarze <schwarze@openbsd.org>
.\"
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.Dd $Mdocdate: June 14 2019 $
.Dt OPENSSL_INIT_SSL 3
.Os
.Sh NAME
.Nm OPENSSL_init_ssl
.Nd initialise the crypto and ssl libraries
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft int
.Fo OPENSSL_init_ssl
.Fa "uint64_t options"
.Fa "const void *dummy"
.Fc
.Sh DESCRIPTION
This function is deprecated.
It is never useful for any application program to call it explicitly.
The library automatically calls it internally with an
.Fa options
argument of 0 whenever needed.
It is safest to assume that any function may do so.
.Pp
To enable or disable the standard configuration file, instead use
.Xr OPENSSL_config 3
or
.Xr OPENSSL_no_config 3 ,
respectively.
To load a non-standard configuration file, refer to
.Xr CONF_modules_load_file 3 .
.Pp
.Fn OPENSSL_init_ssl
calls
.Xr OPENSSL_init_crypto 3 ,
.Xr SSL_load_error_strings 3 ,
and
.Xr SSL_library_init 3 .
.Pp
The
.Fa options
argument is passed on to
.Xr OPENSSL_init_crypto 3
and the
.Fa dummy
argument is ignored.
.Pp
If this function is called more than once,
none of the calls except the first one have any effect.
.Sh RETURN VALUES
.Fn OPENSSL_init_ssl
is intended to return 1 on success or 0 on error.
.Sh SEE ALSO
.Xr CONF_modules_load_file 3 ,
.Xr OPENSSL_config 3 ,
.Xr ssl 3
.Sh HISTORY
.Fn OPENSSL_init_ssl
first appeared in OpenSSL 1.1.0 and has been available since
.Ox 6.3 .
.Sh BUGS
.Fn OPENSSL_init_ssl
silently ignores even more configuration failures than
.Xr OPENSSL_init_crypto 3 .
